General details about grating types SP, N, NP & Variable

Elefant gratings consist of vertical standing flat bars. The tallest bars are in the span direction and are called bearing bars. The transverse bars are called control and filler bars, and the control bars are used to keep the gratings square during the pressure welding.

Together, the bars form a pattern of many square/rectangular sections, called “meshes”.

The gratings are usually finished with an edge bar that can be made to suit your requirements.

Type SP is the most common type on which the vast majority of our standard products are based, whilst types NP, N, Variable & Louvre Gratings are primarily used in connection with custom-made gratings - often for purposes where requirements are made of design and aesthetic appearance.

Dimension:

May be manufactured in dimensions up to 1250x3300 mm subject to weight and specification. Larger panels can be accommodated upon agreement.

Edge bar: 

Flat bar plate, box section or angle section – as required.

Mesh sizes:

Minimum: 9x9 mm
Maximum: 200x200 mm
Both subject to specification of bar and grating size.

Bearing bars:

From 20x2 to 80x5 mm in various increments.

Serrating: 

May be manufactured with serrated bars, in one or both directions. See the section on serrating.